Crank-shaft-lubricating apparatus.



PATENTED OCT. 3, 1905.

A. T. MARSHALL. CRANK SHAFT LUBRIGATING APPARATUS.

APPLIGATION FILED MAR.4.,1904.

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UNITED STATES PATENT OFFICE.

ALBERT T. MARSHALL, OF SWAMPSCOTT, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO AUTOMATIC REFRIGERATING COMPANY, A

CORPORATION OF NEWV JERSEY.

CRANK-SHAFT-LUBRICATING APPARATUS.

Specification of Letters Patent.

Patented Oct. 3, 1905.

Application filed March 4, 1904. Serial No. 196,482.

To all whont it may concern:

Be it known that I, ALBERT T. MARSHALL, a citizen of the United States, residing at Swampscott, in the county of Essex and State of Massachusetts, have invented a new and useful Crank-Shaft-Lubricating Apparatus, of which the following is a specification.

This invention relates to a lubricating device for oiling the crank-shaft and pitman bearings of an engine, an air-compressor, or other machinery.

The especial object of this invention is to provide a simple and efficient construction in which a single oil-carrying brush is used for conveying oil both to a pitman-bearing and to one of the crank-shaft bearings.

To this end this invention consists of the parts and combinations of parts as hereinafter described, and more particularly pointed out in the claims at the end of this specification.

In the accompanying drawings, Figure 1 is a fragmentary sectional view of sufiicient parts of an engine or other machine to illustrate the application of my invention thereto. Fig. 2 is a perspective view of the wipingbrush. Fig. 3 is a view of one of the guidewires for directing oil to one of the crankshaft bearings, and Fig. 4 is a view of a guidewire for directing oil to a pitman-bearing.

In that class of engines in which a crankshaft is inclosed within a casing it has heretofore been the practice either to have the crank-shaft itself dip down into the oil contained in the casing or else to use oil-conveying devices for circulating the oil around the hearings of the engine.

The especial object of my present invention is to improve and simplify the lubricating devices of this class by providingaconstruction in which each wiping-brush cooperates with two guide-wires, one guide-wire directing oil to one of the crank-shaft bearings and the other guide-wire directing oil to a pitman-bearing.

Referring to the accompanying drawings for a detail description of an apparatus embodying this invention, F designates the casing or frame of an engine, an air-compressor, or similar machine. Bolted to the casing or frame F are bearing-heads 10, and journaled in boxes in the heads 10 is a crank-shaft 11. The crank-shaft may be of the single or double type. As herein illustrated, the engine or other machine is provided with a doublyoffset crank-shaft. Connected with the crankpins of the shaft 11 are the pitman or connecting rods 12.

Each set of lubricating devices constructed according to my invention comprises a wiping-brush consisting of a piece of sheet metal 13, which is fastened by screws to one of the crank-arms of the crank-shaft. At its end the sheet-metal piece 13 is provided with an ear or roll which receives the brushes or bristles for conveying oil from the bottom of the engine-casing.

Cooperating with the wiping-brush is a guide-wire 15, having a downwardly-extending end extending into an oil-hole of one of the crank-shaft bearings, and also cooperating with the wiping-brush is a guide-wire 16, having its free end extending into an oil-hole of a pitman or connecting rod bearing.

In connection with a double crank-shaft two sets of oiling devices are used.

As illustrated in Fig. 1, one of the wipingbrushes will be moved down into the oil while the other wiping-brush is passing its guidewires and conveying oil thereto which will lubricate a pitman or connecting rod bearing and one of the crank-shaft bearings.

I am aware that changes may be made in practicing my invention by those who are skilled in the art without departing from the' scope thereof as expressed in the claims and that my invention may be used in connection with different types of engine or air-compressor constructions. I do notwish. therefore, to be limited to the construction I haveherein shown and described; but

WVhat I do claim, and desire to secure by Letters Patent of the United States, is

1. In a construction of the class described, the combination of the frame, a crank-shaft journaled therein, a connecting rod, two guide-wires, one directing oil to a connectingrod bearing and the other to a crank shaft bearing, and a wiping brush turning with the crank-arm of the crank-shaft so as to pass between the guide wires and the opposite sides of said brush simultaneously engaging said wires.

2. In a construction of the class described, the combination of a frame, a crank-shaft journaled therein, a connecting-rod, a wipingbrush consisting of a holder with bristles extending horizontally from opposite sides therecrank-shaft journaled therein, two eonnect ing-rods, two brushes, one turning with each erank-arm of the crank-shaft and two guidewires cooperating with each brush, said brushes being arranged to pass between the guide-wires and to be simultaneously engaged upon opposite sides therewith.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

ALBERT T. MARSHALL.

\V i tnesses: PHILIP SoU'rneA'rn,

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